]> git.saurik.com Git - wxWidgets.git/blobdiff - src/generic/datectlg.cpp
Added Set/GetQuickBestSize
[wxWidgets.git] / src / generic / datectlg.cpp
index bbd2f8f0d1f946aca8c4f8da47f77eba434eb38c..abcbacf408253df9f8b7a3f98c49b1700183ee3b 100644 (file)
@@ -29,7 +29,8 @@
 
 // use this version if we're explicitly requested to do it or if it's the only
 // one we have
-#if wxUSE_DATEPICKCTRL_GENERIC || !defined(wxHAS_NATIVE_DATEPICKCTRL)
+#if !defined(wxHAS_NATIVE_DATEPICKCTRL) || \
+        (defined(wxUSE_DATEPICKCTRL_GENERIC) && wxUSE_DATEPICKCTRL_GENERIC)
 
 #ifndef WX_PRECOMP
     #include "wx/bmpbuttn.h"
     // this header is not included from wx/datectrl.h if we have a native
     // version, but we do need it here
     #include "wx/generic/datectrl.h"
-#endif
-
-// we need to define _WX_DEFINE_DATE_EVENTS_ before including wx/dateevt.h to
-// define the event types we use if we're the only date picker control version
-// being compiled -- otherwise it's defined in the native version implementation
-#ifndef wxHAS_NATIVE_DATEPICKCTRL
+#else
+    // we need to define _WX_DEFINE_DATE_EVENTS_ before including wx/dateevt.h to
+    // define the event types we use if we're the only date picker control version
+    // being compiled -- otherwise it's defined in the native version implementation
     #define _WX_DEFINE_DATE_EVENTS_
 #endif
 
@@ -74,10 +73,275 @@ enum
     #define DEFAULT_ITEM_WIDTH 100
 #endif
 
+#if defined(__WXMSW__)
+    #undef wxUSE_POPUPWIN
+    #define wxUSE_POPUPWIN    0  // Popup not working
+    #define TXTCTRL_FLAGS     wxNO_BORDER
+    #define CALBORDER         0
+    #define TXTPOSY           1
+#elif defined(__WXGTK__)
+    #define TXTCTRL_FLAGS     0
+    #define CALBORDER         4
+    #define TXTPOSY           0
+#else
+    #define TXTCTRL_FLAGS     0
+    #define CALBORDER         4
+    #define TXTPOSY           0
+#endif
+
+// ----------------------------------------------------------------------------
+// global variables
+// ----------------------------------------------------------------------------
+
+// this should have been a flag in wxDatePickerCtrlGeneric itself but adding it
+// there now would break backwards compatibility, so put it here as a global:
+// this shouldn't be a big problem as only one (GUI) thread normally can call
+// wxDatePickerCtrlGeneric::SetValue() and so it can be only ever used for one
+// control at a time
+//
+// if the value is not NULL, it points to the control which is inside SetValue()
+static wxDatePickerCtrlGeneric *gs_inSetValue = NULL;
+
 // ----------------------------------------------------------------------------
 // local classes
 // ----------------------------------------------------------------------------
 
+// This flag indicates that combo box style drop button is to be created
+#define wxBU_COMBO          0x0400
+
+
+class wxDropdownButton : public wxBitmapButton
+{
+public:
+    wxDropdownButton() { Init(); }
+    wxDropdownButton(wxWindow *parent,
+                     wxWindowID id,
+                     const wxPoint& pos = wxDefaultPosition,
+                     const wxSize& size = wxDefaultSize,
+                     long style=0,
+                     const wxValidator& validator = wxDefaultValidator);
+
+    bool Create(wxWindow *parent,
+                wxWindowID id,
+                const wxPoint& pos = wxDefaultPosition,
+                const wxSize& size = wxDefaultSize,
+                long style = 0,
+                const wxValidator& validator = wxDefaultValidator);
+
+protected:
+    virtual void DoMoveWindow(int x, int y, int w, int h);
+
+    void OnSize(wxSizeEvent& event);
+    void OnMouseEnter(wxMouseEvent& event);
+    void OnMouseLeave(wxMouseEvent& event);
+
+    void RecreateBitmaps(int w, int h);
+
+    wxBitmap    m_bmpNormal;
+    wxBitmap    m_bmpHot;
+
+    int         m_borderX, m_borderY;
+
+    // True if DrawDropArrow should be used instead of DrawComboBoxDropButton
+    bool        m_useDropArrow;
+
+private:
+
+    void Init()
+    {
+        m_borderX = -1;
+        m_borderY = -1;
+    }
+
+    DECLARE_EVENT_TABLE()
+    DECLARE_DYNAMIC_CLASS_NO_COPY(wxDropdownButton)
+};
+
+
+// Below, macro DROPBUT_USEDROPARROW should return false when
+// DrawComboBoxDropButton is to be used to render the entire button.
+// COMBOST is non-zero if wxBU_COMBO was set.
+
+#if defined(__WXMSW__)
+
+    #define DROPBUT_USEDROPARROW(COMBOST)   (COMBOST?false:true)
+    #define DROPBUT_DEFAULT_WIDTH           17
+
+#elif defined(__WXGTK__)
+
+    #define DROPBUT_USEDROPARROW(COMBOST)   true
+    #define DROPBUT_DEFAULT_WIDTH           19
+
+#else
+
+    #define DROPBUT_USEDROPARROW(COMBOST)   true
+    #define DROPBUT_DEFAULT_WIDTH           17
+
+#endif
+
+
+IMPLEMENT_DYNAMIC_CLASS(wxDropdownButton, wxBitmapButton)
+
+
+BEGIN_EVENT_TABLE(wxDropdownButton,wxBitmapButton)
+    EVT_ENTER_WINDOW(wxDropdownButton::OnMouseEnter)
+    EVT_LEAVE_WINDOW(wxDropdownButton::OnMouseLeave)
+    EVT_SIZE(wxDropdownButton::OnSize)
+END_EVENT_TABLE()
+
+
+wxDropdownButton::wxDropdownButton(wxWindow *parent,
+                                   wxWindowID id,
+                                   const wxPoint& pos,
+                                   const wxSize& size,
+                                   long style,
+                                   const wxValidator& validator)
+{
+    Init();
+    Create(parent, id, pos, size, style, validator);
+}
+
+
+bool wxDropdownButton::Create(wxWindow *parent,
+                              wxWindowID id,
+                              const wxPoint& pos,
+                              const wxSize& size,
+                              long style,
+                              const wxValidator& validator)
+{
+    m_marginX = 0;
+    m_marginY = 0;
+
+    m_useDropArrow = DROPBUT_USEDROPARROW(style & wxBU_COMBO);
+
+    wxBitmap chkBmp(15,15);  // arbitrary
+    if ( !wxBitmapButton::Create(parent, id, chkBmp,
+                                 pos, wxDefaultSize,
+                                 style | (m_useDropArrow ? wxBU_AUTODRAW : wxNO_BORDER),
+                                 validator) )
+        return false;
+
+    const wxSize sz = GetSize();
+    int w = chkBmp.GetWidth(),
+        h = chkBmp.GetHeight();
+    m_borderX = sz.x - m_marginX - w;
+    m_borderY = sz.y - m_marginY - h;
+
+    DoMoveWindow(pos.x, pos.y, size.x, size.y);
+
+    return true;
+}
+
+
+void wxDropdownButton::RecreateBitmaps(int w, int h)
+{
+    wxMemoryDC dc;
+
+    int borderX = m_marginX + m_borderX;
+    int borderY = m_marginY + m_borderY;
+    int bw = w - borderX;
+    int bh = h - borderY;
+
+    wxBitmap bmp(bw, bh);
+    wxBitmap bmpSel(bw, bh);
+    wxRect r(0,0,w,h);
+
+    wxRendererNative& renderer = wxRendererNative::Get();
+
+    dc.SelectObject(bmp);
+
+    if ( m_useDropArrow )
+    {
+        // Use DrawDropArrow on transparent background.
+
+        wxColour magic(255,0,255);
+        wxBrush magicBrush(magic);
+        r.x = -(borderX/2);
+        r.y = -(borderY/2);
+
+        dc.SetBrush( magicBrush );
+        dc.SetPen( *wxTRANSPARENT_PEN );
+        dc.DrawRectangle(0,0,bw,bh);
+        renderer.DrawDropArrow(this, dc, r);
+        dc.SelectObject( wxNullBitmap );
+        wxMask *mask = new wxMask( bmp, magic );
+        bmp.SetMask( mask );
+
+        dc.SelectObject(bmpSel);
+
+        dc.SetBrush( magicBrush );
+        dc.SetPen( *wxTRANSPARENT_PEN );
+        dc.DrawRectangle(0,0,bw,bh);
+        renderer.DrawDropArrow(this, dc, r, wxCONTROL_PRESSED);
+        dc.SelectObject( wxNullBitmap );
+        mask = new wxMask( bmpSel, magic );
+        bmpSel.SetMask( mask );
+    }
+    else
+    {
+        // Use DrawComboBoxDropButton for the entire button
+        // (also render extra "hot" button state).
+
+        renderer.DrawComboBoxDropButton(this, dc, r);
+
+        dc.SelectObject(bmpSel);
+
+        renderer.DrawComboBoxDropButton(this, dc, r, wxCONTROL_PRESSED);
+
+        wxBitmap bmpHot(bw,bh);
+        dc.SelectObject(bmpHot);
+        renderer.DrawComboBoxDropButton(this, dc, r, wxCONTROL_CURRENT);
+
+        m_bmpNormal = bmp;
+        m_bmpHot = bmpHot;
+    }
+
+    SetBitmapLabel(bmp);
+    SetBitmapSelected(bmpSel);
+}
+
+
+void wxDropdownButton::DoMoveWindow(int x, int y, int w, int h)
+{
+    if (w < 0)
+        w = DROPBUT_DEFAULT_WIDTH;
+
+    wxBitmapButton::DoMoveWindow(x, y, w, h);
+}
+
+
+void wxDropdownButton::OnSize(wxSizeEvent& event)
+{
+    if ( m_borderX >= 0 && m_borderY >= 0 )
+    {
+        int w, h;
+        GetClientSize(&w,&h);
+
+        if ( w > 1 && h > 1 )
+            RecreateBitmaps(w,h);
+    }
+    event.Skip();
+}
+
+
+void wxDropdownButton::OnMouseEnter(wxMouseEvent& event)
+{
+    if ( !m_useDropArrow )
+        SetBitmapLabel(m_bmpHot);
+
+    event.Skip();
+}
+
+
+void wxDropdownButton::OnMouseLeave(wxMouseEvent& event)
+{
+    if ( !m_useDropArrow )
+        SetBitmapLabel(m_bmpNormal);
+
+    event.Skip();
+}
+
+
 #if wxUSE_POPUPWIN
 
 #include "wx/popupwin.h"
@@ -136,10 +400,11 @@ BEGIN_EVENT_TABLE(wxDatePickerCtrlGeneric, wxDatePickerCtrlBase)
     EVT_BUTTON(CTRLID_BTN, wxDatePickerCtrlGeneric::OnClick)
     EVT_TEXT(CTRLID_TXT, wxDatePickerCtrlGeneric::OnText)
     EVT_CHILD_FOCUS(wxDatePickerCtrlGeneric::OnChildSetFocus)
+    EVT_SIZE(wxDatePickerCtrlGeneric::OnSize)
 END_EVENT_TABLE()
 
 #ifndef wxHAS_NATIVE_DATEPICKCTRL
-    IMPLEMENT_DYNAMIC_CLASS(wxDatePickerCtrl, wxDatePickerCtrlBase)
+    IMPLEMENT_DYNAMIC_CLASS(wxDatePickerCtrl, wxControl)
 #endif
 
 // ----------------------------------------------------------------------------
@@ -168,30 +433,16 @@ bool wxDatePickerCtrlGeneric::Create(wxWindow *parent,
 
     InheritAttributes();
 
-    m_txt = new wxTextCtrl(this, CTRLID_TXT);
-    m_txt->Connect(wxID_ANY, wxID_ANY, wxEVT_KEY_DOWN,
-                   (wxObjectEventFunction)&wxDatePickerCtrlGeneric::OnEditKey,
-                   0, this);
-    m_txt->Connect(wxID_ANY, wxID_ANY, wxEVT_KILL_FOCUS,
-                   (wxObjectEventFunction)&wxDatePickerCtrlGeneric::OnKillFocus,
-                   0, this);
+    m_txt = new wxTextCtrl(this, CTRLID_TXT, wxEmptyString, wxDefaultPosition, wxDefaultSize, TXTCTRL_FLAGS);
 
-    const int height = m_txt->GetBestSize().y - 4; // FIXME: fudge
-    wxBitmap bmp(height, height);
-    {
-        wxMemoryDC dc;
-        dc.SelectObject(bmp);
-        wxRendererNative::Get().DrawComboBoxDropButton
-                                (
-                                    this,
-                                    dc,
-                                    wxRect(0, 0, height, height)
-                                );
-    }
+    m_txt->Connect(wxEVT_KEY_DOWN,
+                   wxKeyEventHandler(wxDatePickerCtrlGeneric::OnEditKey),
+                   NULL, this);
+    m_txt->Connect(wxEVT_KILL_FOCUS,
+                   wxFocusEventHandler(wxDatePickerCtrlGeneric::OnKillFocus),
+                   NULL, this);
 
-    wxBitmapButton *btn = new wxBitmapButton(this, CTRLID_BTN, bmp);
-    btn->SetMargins(0, 0);
-    m_btn = btn;
+    m_btn = new wxDropdownButton(this, CTRLID_BTN, wxDefaultPosition, wxDefaultSize, wxBU_COMBO);
 
     m_popup = new wxDatePopupInternal(this);
     m_popup->SetFont(GetFont());
@@ -202,32 +453,32 @@ bool wxDatePickerCtrlGeneric::Create(wxWindow *parent,
     m_cal = new wxCalendarCtrl(panel, CTRLID_CAL, wxDefaultDateTime,
                                wxPoint(0, 0), wxDefaultSize,
                                wxCAL_SHOW_HOLIDAYS | wxSUNKEN_BORDER);
-    m_cal->Connect(CTRLID_CAL, CTRLID_CAL, wxEVT_CALENDAR_SEL_CHANGED,
-                   (wxObjectEventFunction)&wxDatePickerCtrlGeneric::OnSelChange,
-                   0, this);
-    m_cal->Connect(wxID_ANY, wxID_ANY, wxEVT_KEY_DOWN,
-                   (wxObjectEventFunction)&wxDatePickerCtrlGeneric::OnCalKey,
-                   0, this);
-    m_cal->Connect(CTRLID_CAL, CTRLID_CAL, wxEVT_CALENDAR_DOUBLECLICKED,
-                   (wxObjectEventFunction)&wxDatePickerCtrlGeneric::OnSelChange,
-                   0, this);
-    m_cal->Connect(CTRLID_CAL, CTRLID_CAL, wxEVT_CALENDAR_DAY_CHANGED,
-                   (wxObjectEventFunction)&wxDatePickerCtrlGeneric::OnSelChange,
-                   0, this);
-    m_cal->Connect(CTRLID_CAL, CTRLID_CAL, wxEVT_CALENDAR_MONTH_CHANGED,
-                   (wxObjectEventFunction)&wxDatePickerCtrlGeneric::OnSelChange,
-                   0, this);
-    m_cal->Connect(CTRLID_CAL, CTRLID_CAL, wxEVT_CALENDAR_YEAR_CHANGED,
-                   (wxObjectEventFunction)&wxDatePickerCtrlGeneric::OnSelChange,
-                   0, this);
+    m_cal->Connect(wxEVT_CALENDAR_SEL_CHANGED,
+                   wxCalendarEventHandler(wxDatePickerCtrlGeneric::OnSelChange),
+                   NULL, this);
+    m_cal->Connect(wxEVT_KEY_DOWN,
+                   wxKeyEventHandler(wxDatePickerCtrlGeneric::OnCalKey),
+                   NULL, this);
+    m_cal->Connect(wxEVT_CALENDAR_DOUBLECLICKED,
+                   wxCalendarEventHandler(wxDatePickerCtrlGeneric::OnSelChange),
+                   NULL, this);
+    m_cal->Connect(wxEVT_CALENDAR_DAY_CHANGED,
+                   wxCalendarEventHandler(wxDatePickerCtrlGeneric::OnSelChange),
+                   NULL, this);
+    m_cal->Connect(wxEVT_CALENDAR_MONTH_CHANGED,
+                   wxCalendarEventHandler(wxDatePickerCtrlGeneric::OnSelChange),
+                   NULL, this);
+    m_cal->Connect(wxEVT_CALENDAR_YEAR_CHANGED,
+                   wxCalendarEventHandler(wxDatePickerCtrlGeneric::OnSelChange),
+                   NULL, this);
 
     wxWindow *yearControl = m_cal->GetYearControl();
 
-    Connect(wxID_ANY, wxID_ANY, wxEVT_SET_FOCUS,
-            (wxObjectEventFunction)&wxDatePickerCtrlGeneric::OnSetFocus);
+    Connect(wxEVT_SET_FOCUS,
+            wxFocusEventHandler(wxDatePickerCtrlGeneric::OnSetFocus));
 
     wxClientDC dc(yearControl);
-    dc.SetFont(m_font);
+    dc.SetFont(yearControl->GetFont());
     wxCoord width, dummy;
     dc.GetTextExtent(wxT("2000"), &width, &dummy);
     width += ConvertDialogToPixels(wxSize(20, 0)).x;
@@ -240,17 +491,6 @@ bool wxDatePickerCtrlGeneric::Create(wxWindow *parent,
 
     SetFormat(wxT("%x"));
 
-
-#ifdef __WXMSW__
-    #define CALBORDER         0
-    #define RIGHTBUTTONBORDER 2
-    #define TOPBUTTONBORDER   1
-#else
-    #define CALBORDER         4
-    #define RIGHTBUTTONBORDER 0
-    #define TOPBUTTONBORDER   0
-#endif
-
     width = yearPosition.x + yearSize.x+2+CALBORDER/2;
     if (width < calSize.x-4)
         width = calSize.x-4;
@@ -272,10 +512,11 @@ bool wxDatePickerCtrlGeneric::Create(wxWindow *parent,
     m_popup->SetClientSize(panel->GetSize());
     m_popup->Hide();
 
-    if (!date.IsValid())
-        date.Today();
+    SetValue(date.IsValid() ? date : wxDateTime::Today());
+
+    SetBestFittingSize(size);
 
-    SetValue(date);
+    SetBackgroundColour(m_txt->GetBackgroundColour());
 
     return true;
 }
@@ -292,6 +533,13 @@ void wxDatePickerCtrlGeneric::Init()
     m_ignoreDrop = false;
 }
 
+wxDatePickerCtrlGeneric::~wxDatePickerCtrlGeneric()
+{
+    m_popup = NULL;
+    m_txt = NULL;
+    m_cal = NULL;
+    m_btn = NULL;
+}
 
 bool wxDatePickerCtrlGeneric::Destroy()
 {
@@ -319,11 +567,6 @@ bool wxDatePickerCtrlGeneric::Destroy()
 void wxDatePickerCtrlGeneric::DoMoveWindow(int x, int y, int w, int h)
 {
     wxControl::DoMoveWindow(x, y, w, h);
-    wxSize bs=m_btn->GetBestSize();
-    int eh=m_txt->GetBestSize().y;
-
-    m_txt->SetSize(0, 0, w-bs.x-1, h > eh ? eh : h);
-    m_btn->SetSize(w - bs.x-RIGHTBUTTONBORDER, TOPBUTTONBORDER, bs.x, h > bs.y ? bs.y : h);
 
     if (m_dropped)
         DropDown(true);
@@ -366,8 +609,8 @@ bool wxDatePickerCtrlGeneric::Enable(bool enable)
 
     if ( !enable )
     {
-        if ( m_cal )
-            m_cal->Hide();
+        if ( m_popup )
+            m_popup->Hide();
     }
 
     if ( m_btn )
@@ -389,14 +632,14 @@ wxDatePickerCtrlGeneric::SetDateRange(const wxDateTime& lowerdate,
 
 bool wxDatePickerCtrlGeneric::SetFormat(const wxChar *fmt)
 {
+    m_format.clear();
+
     wxDateTime dt;
     dt.ParseFormat(wxT("2003-10-13"), wxT("%Y-%m-%d"));
-    wxString str=dt.Format(fmt);
-    wxChar *p=(wxChar*)str.c_str();
-
-    m_format=wxEmptyString;
+    wxString str(dt.Format(fmt));
 
-    while (*p)
+    const wxChar *p = str.c_str();
+    while ( *p )
     {
         int n=wxAtoi(p);
         if (n == dt.GetDay())
@@ -426,25 +669,26 @@ bool wxDatePickerCtrlGeneric::SetFormat(const wxChar *fmt)
             m_format.Append(*p++);
     }
 
-    if (m_txt)
+    if ( m_txt )
     {
         wxArrayString allowedChars;
         for ( wxChar c = _T('0'); c <= _T('9'); c++ )
             allowedChars.Add(wxString(c, 1));
 
-        const wxChar *p = m_format.c_str();
-        while (*p)
+        const wxChar *p2 = m_format.c_str();
+        while ( *p2 )
         {
-            if (*p == '%')
-                p += 2;
+            if ( *p2 == '%')
+                p2 += 2;
             else
-                allowedChars.Add(wxString(*p++, 1));
+                allowedChars.Add(wxString(*p2++, 1));
         }
 
+#if wxUSE_VALIDATORS
         wxTextValidator tv(wxFILTER_INCLUDE_CHAR_LIST);
         tv.SetIncludes(allowedChars);
-
         m_txt->SetValidator(tv);
+#endif
 
         if (m_currentDate.IsValid())
             m_txt->SetValue(m_currentDate.Format(m_format));
@@ -462,20 +706,29 @@ wxDateTime wxDatePickerCtrlGeneric::GetValue() const
 
 void wxDatePickerCtrlGeneric::SetValue(const wxDateTime& date)
 {
-    if (m_cal)
-    {
-        if (date.IsValid())
-            m_txt->SetValue(date.Format(m_format));
-        else
-        {
-            wxASSERT_MSG( HasFlag(wxDP_ALLOWNONE),
-                            _T("this control must have a valid date") );
+    if ( !m_cal ) 
+        return;
 
-            m_txt->SetValue(wxEmptyString);
-        }
+    // we need to suppress the event sent from wxTextCtrl as calling our
+    // SetValue() should not result in an event being sent (wxTextCtrl is
+    // an exception to this rule)
+    gs_inSetValue = this;
 
-        m_currentDate = date;
+    if ( date.IsValid() )
+    {
+        m_txt->SetValue(date.Format(m_format));
+    }
+    else // invalid date
+    {
+        wxASSERT_MSG( HasFlag(wxDP_ALLOWNONE),
+                        _T("this control must have a valid date") );
+
+        m_txt->SetValue(wxEmptyString);
     }
+
+    gs_inSetValue = NULL;
+
+    m_currentDate = date;
 }
 
 
@@ -506,7 +759,7 @@ void wxDatePickerCtrlGeneric::DropDown(bool down)
         if (down)
         {
             wxDateTime dt;
-            if (!m_txt->GetValue().IsEmpty())
+            if (!m_txt->GetValue().empty())
                 dt.ParseFormat(m_txt->GetValue(), m_format);
 
             if (dt.IsValid())
@@ -529,6 +782,23 @@ void wxDatePickerCtrlGeneric::DropDown(bool down)
 }
 
 
+void wxDatePickerCtrlGeneric::OnSize(wxSizeEvent& event)
+{
+    if ( m_btn )
+    {
+        wxSize sz = GetClientSize();
+
+        wxSize bs=m_btn->GetSize();
+        int eh=m_txt->GetBestSize().y;
+
+        m_txt->SetSize(0, TXTPOSY, sz.x-bs.x, sz.y > eh ? eh-TXTPOSY : sz.y-TXTPOSY);
+        m_btn->SetSize(sz.x - bs.x, 0, bs.x, sz.y);
+    }
+
+    event.Skip();
+}
+
+
 void wxDatePickerCtrlGeneric::OnChildSetFocus(wxChildFocusEvent &ev)
 {
     ev.Skip();
@@ -545,7 +815,7 @@ void wxDatePickerCtrlGeneric::OnChildSetFocus(wxChildFocusEvent &ev)
     if (m_dropped)
     {
         DropDown(false);
-        if (ev.GetEventObject() == m_btn)
+        if (::wxFindWindowAtPoint(::wxGetMousePosition()) == m_btn)
             m_ignoreDrop = true;
     }
 }
@@ -578,23 +848,27 @@ void wxDatePickerCtrlGeneric::OnSetFocus(wxFocusEvent& WXUNUSED(ev))
 
 void wxDatePickerCtrlGeneric::OnKillFocus(wxFocusEvent &ev)
 {
+    if (!m_txt)
+        return;
+    
     ev.Skip();
 
     wxDateTime dt;
     dt.ParseFormat(m_txt->GetValue(), m_format);
-    if (!dt.IsValid())
+    if ( !dt.IsValid() )
     {
         if ( !HasFlag(wxDP_ALLOWNONE) )
             dt = m_currentDate;
     }
 
-    if (!dt.IsValid())
-        m_txt->SetValue(wxEmptyString);
-    else
+    if(dt.IsValid())
         m_txt->SetValue(dt.Format(m_format));
+    else
+        m_txt->SetValue(wxEmptyString);
 
     // notify that we had to change the date after validation
-    if (m_currentDate != dt)
+    if ( (dt.IsValid() && (!m_currentDate.IsValid() || m_currentDate != dt)) ||
+            (!dt.IsValid() && m_currentDate.IsValid()) )
     {
         m_currentDate = dt;
         wxDateEvent event(this, dt, wxEVT_DATE_CHANGED);
@@ -626,15 +900,21 @@ void wxDatePickerCtrlGeneric::OnSelChange(wxCalendarEvent &ev)
 
 void wxDatePickerCtrlGeneric::OnText(wxCommandEvent &ev)
 {
+    if ( gs_inSetValue )
+    {
+        // artificial event resulting from our own SetValue() call, ignore it
+        return;
+    }
+
     ev.SetEventObject(this);
     ev.SetId(GetId());
     GetParent()->ProcessEvent(ev);
 
     // We'll create an additional event if the date is valid.
     // If the date isn't valid, the user's probably in the middle of typing
-    wxString txt=m_txt->GetValue();
+    wxString txt = m_txt->GetValue();
     wxDateTime dt;
-    if (!txt.IsEmpty())
+    if (!txt.empty())
     {
         dt.ParseFormat(txt, m_format);
         if (!dt.IsValid())